from turtle import Screen, Turtle

pantalla = Screen()
pantalla.setup(425, 225)
pantalla.screensize(400, 200)

tortuga = Turtle()
tortuga.forward(100)
tortuga.left(35)
tortuga.forward(100)
tortuga.left(90)
tortuga.forward(100)
tortuga.left(90)
tortuga.forward(100)
tortuga.left(90)
tortuga.forward(100)

pantalla.exitonclick()